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Clinical Trial Summary

This study of vitamin D is designed to assess both the safety and efficacy of potential doses (2,000 IU/day and 4,000 IU/day) in raising a vitamin D level to a normal range in a short period of time (e.g. 4 weeks or less) compared to 200 IU/day.

In children with vitamin D insufficiency or deficiency who are at risk for severe asthma exacerbations, we hypothesize that both vitamin D supplementation with 4,000 IU/day and 2,000 IU/day will safely achieve normal vitamin D levels, but that the higher dose (4,000 IU/day) will result in a larger proportion of subjects achieving this level within 4 weeks.


Clinical Trial Description

Asthma is a major public health problem in the United States and worldwide. Severe disease exacerbations account for the majority of costs attributable to asthma in the United States. Vitamin D is an essential nutrient with significant immuno-modulatory effects. The observation that vitamin D insufficiency and asthma share risk factors such as urban residence, obesity, and African American ethnicity has generated significant interest in exploring a link between these two conditions.

This is an 8-week randomized, double-masked, controlled trial of vitamin D3 (2,000 IU/day and 4,000 IU/day) to achieve vitamin D sufficiency (a serum 25(OH)D ≥30 ng/ml in 60 school-aged children (ages 6 to 14 years) who have vitamin D insufficiency (a serum 25(OH)D <30 ng/ml) and are at risk for severe asthma exacerbations, but whose asthma that is well-controlled on medium-dose inhaled corticosteroid (ICS) at the end of a 4-week run-in period. ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Prevention


Related Conditions & MeSH terms


NCT number NCT01921894
Study type Interventional
Source University of Pittsburgh
Contact Rose Lanzo, BS, RT
Phone 412-692-5872
Email rose.lanzo@chp.edu
Status Recruiting
Phase Phase 1
Start date August 2013
Completion date September 2014

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